Homopolar generator



y 1933- I 1. CHANDEYSSON 1,916,256

HOMOPGLAR GENERATOR Filed Sept. 5, 1950 2 Sheets-Sheet 1 I N VENTOR AITORNEY named an; 4, 193a 1,916,256

UNITED STATES PATENT v OFFICE PI EBRE I. CHANDEYSSON', OF ST, LOUIS, MISSOURI HOHOPOLAB GENERATOR Application filed September 5, 1980. Serial No. 479,984.

This invention relates to a homopolar gensleeve 3 is placed on the cylinder and is erator, the general object of the invention beformed of copper, brass or any other suitable ring ,to provide a direct current generator of material. A circular casingA surrounds the low voltage and high amperage, such as are cylinder and said casing is formed of the used in electro-plating, electro-galvanizing two sections B and B and each section is 55 and deposition of metals in general, and composed of the parts 4 and 5 of-magnetic w ich can also be used for electrolytic work, material. Each of the sections is also comwelding and other processes requiring large posed of a pair of semi-circular sections (2 currents at comparatively lowtension. and b. which are suitably connected together Another object of the invention is to proand each of the parts 4 and 5,is of substan- 3 vide a generator which has great simpllcity tially L-shape in cross section, with the inner and is composed of comparatively few parts, end of the part 5 only partly filling the space one that is easy to assemble and disassemble formed in the part 4 so that when the two and is compact and rugged and in which adparts are placed together, an annular cham- 'justments .are practically eliminated and one ber 6 is formed for receiving the coil 7. The which can be built at low cost and the main: chamber has its inner circumference opentenance cost of which is low and one which ing out through the bore of the casing. will have the maximum efiiciency. he outer edge of the part 5 is flush with his invention also consists in certain other the outer circumference of the part 4 and the,

20 features of construction and in the combinatwo parts are separated by the non-conducttion and arrangement of the several parts, to ing material 8. A ring 9 contacts the inner be hereinafter fully described, illustrated in circumference of the part 5 which has an the accompanying drawings and specifically lnterior diameter greater than that of the pointed out in the appended claims. part 4. This ring 9 is provided with a plu- 25 n describing the lnvention in detail, refrality of transverse grooves 10 in its outer erence will be had to the accompanying drawcircumference for receiving the stems 11 of ings wherein like characters denote like or the substantially wedge-shaped bars 12, these corresponding parts throughout the several bars extending across the inner part of the views, and in which chamber 6 and abutting a ring 13 of non- Figure 1 is a sectional view through the conducting material, which insulates the apparatus. brush and the bars from the part 4. A plu- Figure 2 'is a section on line 22 of Figrality of brushes 14 is movably held between me 1 a each pan of the bars 12 and are connected Figure 3 is a perspective view of one of the by the conductors 15 with a bar.

35 brush carrying rings. A port 16 is in communication with the Figure 4 is a view of a pair of the brushes. chamber 6 and is adapted to be connected to Figure 5 is a view of one of the take-ofi' a source of compressed fluid, such as air, so

mem rs, showing the parts thereof separatthat the pressure of this fluid in the chamed. ber will hold the brushes or contactors Figure 6 is a view looking toward the inagainst the sleeve 3. As shown, the casing A ner end of the part 4 of the casing and show is spaced from the sleeve 3 'so that air from ing the sections thereof spaced apart, with the chambers 6 can escape, this air not only the cylinderbetween them. acting to hold the brushes against the sleeve,

Figure 7 is a section looking toward the but also acting to cool the parts. inner end of the part 5. The sections B and B are separated from In these drawings, the numeral 1 indicates each other by the insulating mater1al 16 and a drum or solid cylinder formed of magnetic a sectional plate 17 is fastened to the inner material and having trunnions 2 at its ends end of each section by the bolts 18. The two so that the cylinder can be rotatably supsections of the plate 17 are connected togethported from suitable supporting means. A er by the strips 19 and as will be seen, the

I I is connected inner edge of each section is formed a v semicircular recess20 which is of conslder: ablyeater han the inner. diameter the part 5 so that the sections of the plates are spaced from the rings 9 and-the parts 5 are pre erably recessed to receive portions of the plates. The non-conducting material 16" extends between the plates so as the plates from each other. The

bolted or otherwise fastened to as shown at 21, and each part 5 to its companion part4 by bolts 22 which are insulated from the part 4.

Thus it will be seen that when the parts are assembled and the coils 7 connecte with a suitable source of supply, through means 0 the conductors 23, the magn tic flow will as indicated by the arrows 24 in Figure 1, so that the rotating cylinder 1 will move through the the resultant current magnetic field and flows from the cylinder through the brushes, and through. the part the bars 12, a ring 9 5 to a plate 17 and will return through the other plate, the other part 5 and its ring, through the brushes, back'to the cylinder. By removing one of the semi-circular sections of each half of the apparatus, the coils, brushes and their supporting rings are expose so that repairs can readily made or the parts inspecte plates are the partst,

and the entire apparatus can be easily and quickly assembled and dissassemble It is thought from the foregoing tion that the advantages and novel features of the invention will be readily1 apparent.

It is to be understood that c anges may be made in the construction and in the combination and arrangement of the several parts, providedtliat such changes fall within the sec e of the appende claims.

at I claimris 1. A homopolar motor comprising a rotor formed as 9-, cy surrounded by a'sheathing o non-magnetic material, astator surrounding the rotor and comprising two similar sections ing an outer ring membersubstantially L- shaped in cross section including a radial wall portio and a circumferential flange portion, an inner ring shaped in cross section having a radial descripwall portion adjacent the inner edge of the flan portion of the first named ring an iurt er having a radial flange disposed ad- 5 1acent the inner periphery of the flange portion of the first named ring, the flange portion of the second named ring being of less length than that of the first named ring so as to define a circumferential chamber, a

coil located within said chamber, insulating located within the confines of finder-of ma netic material each includlikewise substantially the brushes and material located between the adjacent sur faces of the first and second named rings, a ring located within the confines of said second named ring an having its periphery formed with a series of grooves, brushes lo-' cated within said chamber and bearing against said sheathing, and separators located between said brushes and having" reduced stems fitting within said grooves.'

2.-A homopolar motor-comprising arotor formed as a cylinder of magnetic material surrounded by a material,

ial wall portion and a circumferential flan e* portion, an inner ring likewise substantial y -shaped in cross section aving a radia wall portion adjacent the inner e flange portion of the first named ring and further having a radialflanfge disposed ad'- jacent the inner periphery o .the flange portion of the first named ring, the flange portion of the second named ring being of length thanthatof the first named ringso as to define a circumferential chamber, a coil located within said chamber, terial located between the adjacent surfaces of the-first and'second named rings, a rin sai secon named ring and having its periphery formed brushes located with with a series of grooves, in said chamber and bearing against said sheathin and separators located between said brus es and having reduced stems fitting within said grooves, said motor consisting of said elements arranged in duplicate an in end to and relation with insulating means interposed therebetween.

of non-magnetic dge of the less insulating maes s 3; A homopolar motor comprising a rotor etic nonmagnetic material, a circumferential chamber containing a coil,

a ring member forming a closure formed as a cylindrical member of ma in the confines of said first named ring member and formed with transverse grooves, abutment ring of insulating material loca within the chamber, brushes located within the chamber inwardly of and connected with said coil and abutting against said named ring and bearing against said sh ing, and separatinglmembers located between aving reduced stems lo-; cated within the grooves in the second named; ring. a In testimonyiwhereoi I afli'x my signature.

PIE RE I. CHAND EYSSON.

eath- 1 the chamber, a second ring member located witht 

